Swing joint steel hose



Oct. 3, 1933. F YQUNG ET AL 1,928,957

SWING JOINT STEEL HOSE Filed June 29, 1931 2 Sheeta-Sheet l Inventors a ZWM 1933- F. J. YOUNG El AL 5 SWING JOINT STEEL HOSE Filed June 29, 1931 2 Sheets-Sheet 2 Inventors Patented Oct. 3, 1933 3 UNITED- STATES PATENT OFFICE V V v a V- V swnvc JOINT STEEL nose Ambrose Murphy, Torrance, Califl, assignors to TheNational Supply CompanmToledo, Ohio,

a corporation of Ohio Application June 29, 1931. sem s); 547,48

1 Claims. (01. 2s5-.-1s)

6 pumps 'or the like with the hydraulic swivel utilized in the rotary drilling'process for conducting. the circulating fluid. or mud from the mud pump or pumps to the swivel for introduction into the drill pipe and for conveying-such mud or circulating fluid from. the pump to the rotary swivel ,under high or relatively high pressures. a

In the handling of circulating fluids where the rotary drilling processes are employed, particularly, duringthe drillingof deep wells, great -difliculty has been encountered in the'maintenance of the fluid conduit connecting the mud pumps with the rotary hydraulic swivel due to :the extremely abrasive character and the high pressure of the fluid being handled.

It is, therefore,an object of this invention to provide a swing joint which is constructed. in such a manner as to reduce the abrasive action of the circulating fluid under high pressure on the swingcouplings utilized in such a conduit and which is applicable for thehandling of the abrasive high pressure fluids, and is alsoasimple and inexpensive construction; I ft;

Another object of this invention is to provide a swingjoint for a steel hose which includes a yoke member and a swivel membenfthe yoke member providing a passage between its tines into which the swivel'inember is adapted to be passed and in which passagethe swivel memberis adapted to be pivotally supported on a pin retained in position by means or pipe plugs threaded to the tines of the. yoke member at the opposite end of the pins, and which swivel mem bercairries packing members which are adapted to be expanded under the fluid pressure of the fluid passing through the joint as assembled.

j Other objects and advantages of this invention it is believed will be apparent from the following detailed description of a preferred embodiment thereof asillustrated in the accompanying drawings.

In the drawings;

Figure 1 is anelevation of a swing joint embodying our invention).

Figure 2 is aside elevation of a compound swing joint embodying our invention."

. Figure BI is aside elevation of a compound swing joint embodying ourinvention wherein the .155 two axes of rotationof the compound swlngjoint are. positioned at 90 degrees to provide a form ofuniversal swing joint. V

Figure 4 is a sectional edge elevation taken substantially on the line 4-4 of Figure 1.

Figure 5 is a side elevationmainly in vertical mid-section of the swing joint illustrated in Figure 1.

V Inthe preferred embodiment of our invention 1 indicates a swivel -member provided at its outer end with a threaded branch 2 into which a joint of steel hose 3 is adapted to be threaded. 4 indicates a yoke member having at its outer end a branch 5 into which a section of a steel hose 3 is adapted to be threaded.

In the modification of my invention illustrated in Figure 2, to providea compound swing joint a double yoke member 6 is provided having swivel heads '7 ands at its opposed ends, the swivel heads 7 and 8 being adapted to fit between the tines of yoke members 4 in a manner similar to the modification illustrated in Figure 1. In this modification the two yoke members 4 having vthreaded branches 5 are employed, and the sections 3' of the steel hose arethreaded into the branches 5 of the yoke members 4.

. In themodification of our invention illustrated in Figure 3, the construction is the same as illustrated in the modification shown in Figure '2 with the exception that the double swivel member 9 is formed with the swivel heads 10 and 11 rotated through 90 degrees sothat the pivotal supports of'said swivel heads 10 and 11 are "swivel members 1 are of the same construction except that in the illustrations of Figures 2 and 3 the double yoke members 9 and 10 are provided. Inasmuch as the heads of the yoke members 1, 6 and 9 are of identical construction, it is only deemed necessary toset forth in detail the construction of the simplest of these swing joint members as is illustrated in Figure 1.

The swivel member ,1 includes a swivel head 12 formed at the end opposite the threaded branch 2. The head l2 of the swivel member 1 fits betweenthe tinesl3and 14 of the yoke 4 and is pivotally supported in position on a pin 15 which is passed through a transverse bore 16 formed through the tines 13 and 14 of the yoke member, 4 and is retained in position by means of pipe plugs 17 and 18 which are threaded into the ends of the bore 16 in position to engage the ends of the pivot pin 15.

The swivel members 1, 6 and 9 are provided with longitudinal passages 19 which terminate in diverging fluid passages 20 and 21 separated by a central diverting barrier 22.

The diverting barrier 22 is formed as a lip which extends into the passage 19. The diverging branches 20 and 21 of the passage 19 extend from the faces 23 and 24 of the heads 12, '7, 8, l0 and 11 of the yoke members 1, 6 and 9 respectively on opposite sides of the pin bore 25 formed axially through the heads 12, '7, 8, 10 and 11 respectively. The yoke members 4 are formed of two spaced tines 13 and 14 which diverge outwardly from the threaded branch 5 and provide diverging fluid passages 26 and 27 which terminate in annular channels 28 and 29 which pass'around the bore 16 of .the pin 15 and terminate in the inner faces of the tines 13 and 14in communication with diverging branches 20 and 21 of the passage 19 formed through the swivel members lor 6 or 9 depending upon the form of connection to be formed.

The diverging fluid passages 26 and 27 are relativelylong and the two diverging fluid passages 26 and 27 diverge or converge upon opposite sides of acentral section '30 of the yoke member 4 and are so formed as to bring the two separated passages 26 and 27together gradually so as to reduce as far as possible the turbulence set up in the flow of the fluid under high pressure through the swing joint provided. 1 I The barrier 22 which extends up into the passage 19 of the swivel member'l is also so positioned and formed as to reduce as far as possible the turbulence created in the fluid passing over such a barrier 22 in the separation, or in the bringing together of the two separated portions of the circulating fluid or liquid which is passing through the swing joint under highpressure.

In these constructions in order to maintain a -more uniform flow of the circulating abrasive fluid'under high pressure, the pivot pin 15 which connects the swivel members and the yoke membersof the joint together 'isnot located at the point of maximum spread of the two branches of the fluid formed in passing through the swing joint, but is positioned in all cases near the end of the yokemeinber 4 so as to enable the yoke member 4 to be formed with relatively long =fluid branches 26 and27 which are brought together .under a slight degree of divergence or convering branches 20 and 21 of the passage 19 to ,the annular packing recesses 31 and 32 so that the fluid under pressure acts to expand the packing rings 33 and 34 btween the swivel member 1 and the yoke member 4 so that as the pressure of the fluid passing through the, swing joint increases, the packing is expanded with greater force by such fluid pressure to maintain a fluid- :tight joint.

in order to protect the pin 15, from the abrasive action of the fluid junder high [pressure-passing through the swing joint, similar annular packing recesses 36 are cut in the opposed'faces Z3 and branches opening through the parallel spaced pair of diverging tines having fluid passages open- 24 of the heads of the swivel members and packing rings 37 are fitted in the recesses 36. Fluid passages 38 are formed in the faces 23 and 24 of the diverging passages 20 and 21 to the recesses 36 so that the packing 3'7, which is preferably of the fluid expansible cup type, is expanded out-' wardly betweenthefaces 23 and 24 ofthe swivel members 1 and the inner adjacent faces of the tines 13 and 14 of the yoke member 4 within the interior of the annular passage formed around the pin 15 in the head 12 of the swivel memher 1.

The pin 15 is lubricated by means of a 1ubricaiion fitting 41 which is threaded in a lubrication passage 39 formed in the swivel member 1 in communication with a lubrication pocket 40 surrounding the pin 15.

In assembling the swing joint embodying our invention, the swivel member 1, carrying the packing rings 33, 34 and 3'7, is merely slid between the tines 13 and14 of the yoke member 4, the pin 15' being then passed through the bores 16 and 25 and is retained in position by means of the pipe plugs 1'7 and 18 whichare threaded to the ends of the bore 16 formed transversely of the tines 13 and 14. As fluid under pressure passes under the swing joint formed, packing 33, 34 and 3'1 is expanded to maintain the joint fluid tight.

Having fully described our invention, it is to be understood that we do not wish to be limited to the details herein set forth, but our invention is of thefull scope of the appended claims.

1. In a metallic swing joint connection, the combination of a swivel member having a swivel 0 head at one end, said swivel head having parallel spaced faces and having a fluid passage extending therethrough terminating in a pair of diverging faces of the swivel headQa yoke member having a pair of diverging tines having fluid passages opening into the opposed adjacent faces thereof and in communication with the branch openings in the faces of the swivel head, a pin passed through the yoke and swivel members providing a-pivot,

means "to retain said pin in position, means to combination of a swivel. member having a swivel head atone end, said swivel head having parallel spaced faces and having a fluid passage extending 1 therethrough terminating in a pair of diverging branches opening through the parallel spaced faces of the swivel head, a yoke member having a ing into the opposed adjacent faces thereof and l in communication, with the branch openings in the faces of the swivel head, said passages through the faces of said members being positioned between .concentric internal and external packing. recesses in the mating faces of one of said members, packing mounted in said recesses to seal the joint against leakage both radially inward and outward, a pin passed through the yoke and swivel members providing a pivot, means to retain said pin in position, and means to lubricate said pivotal connection. l

3. In a metallic swing joint connection, the combination of a swivel member having a swivel head at one end, said swivel head having parallel spaced faces and having a fluid passage ex-' tending therethrough terminating in a pair of diverging branches opening through the parallel spaced faces of the swivel head, a yoke member having a pair of diverging tines having fluid passages opening into the opposed adjacent faces thereof and in communication with the branch openings in the faces of the swivel head, said passages through the faces of said members being positioned between concentric internal and external packing recesses in the mating faces of one of said members, packing mounted in said recesses, means to convey fluid to said recesses -to expand the packing against the adjacent faces of the swivel and yoke members to seal the joint against leakage both radially inward and outward, a pin passed through the yoke and swivel members providing a pivot, means to retain said pin in position, and. means to lubricate saidpivotal connection.

4. 'In a metallic swing joint connection, the combination of a swivel member having a swivel head at one end, said swivel head having parallel spaced faces and having a fluid passage extending therethrough terminating in a pair of diverging branches opening through the parallel spaced faces of the swivel head, said opening through the faces of the swivel head defining a hub portion and a flange portion, a yoke member having a pair of diverging tines having fluid passages opening into the opposed adjacent faces thereof in communication'with the openings in the. faces of the swivel head, said fluid passage through the faces of saidtines defining hub and flange portions complementary to the hub and flange portions on the swivel head, annular packing grooves in the hub por-, tion of one of said members, annular packing grooves in the flange portion of one of said members, packing mounted in the annular packing grooves, means to convey fluid 'to said grooves to expand ,the packing against the adjacent faces of the swivel and yoke members, a pin passed through the yoke member and the swivel member providing a pivot, means to retain said pin in position, and means to lubricate extending therethrough terminating in a pair of diverging branches opening through the parallel spaced faces of the swivel head, said opening through the faces of the swivel head defin- .ing a hub portion and a flange portion, a yoke ing therethrough terminating the huband flange portions on the swivel head,

annular packing grooves in the hub portion of one of said members, annular packing grooves in the flange portion of one of said members, packing mounted in the annular packing grooves, a pin passed through the yoke member and the swivel member providing a pivot, means to retain said pin in position, and means to lubricate said'pivotal connection.

6. In a metallic swing joint connection, the combination of a swivel member having a swivel head atone end, said swivel head having parallel spaced faces and 'having a fluid passage extendin a pair of diverging branches opening through the parallel spaced faces of the swivel head, a yoke member tween;the' swivel and yoke members, means to lubricate said bearing connection, and means for packing the mating faces of the yoke and swivel members to prevent leakage of fluid conducted .therethrough and to maintain the lubricated pivot free of said fluid.

'7. Ina metallic swing joint connection, the

combination of a swivel member having a swivel head at one end, said swivel head having parallel spaced faces and having a fluid passage extending therethrough terminating in a pair of diverging branches opening through the parallel spaced faces of the swivel head, ayoke member having a pair of diverging tines having fluid passages opening into the opposed adjacent faces thereof and in communication with the branch openings in the face of the swivel head, said passages through the faces of said members being positioned between concentric internal and external packing-recesses in the mating faces of one of said members, packing mounted insaid recesses to seal the joint against leakage both radially inward and outward, means forming a pivotal bearing connection between the swivel and yoke members, and means to lubricate said bearing connection.

FORREST JOSEPH YOUNG.

DEMERY AMBROSE MURPHY.

CERTIFICATE OF CORRECTION.

"Patent No. 1,928,957. October 3, 1933.

FORREST JOSEPH YOUNG, ET AL.

,It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 3, line 119, claim 7, for "face" read faces; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 28th day of November, A. D. 1933.

F. M. Hopkins (Seal) Acting Commissioner of Patents. 

